114 строки
3.3 KiB
C
114 строки
3.3 KiB
C
/*
|
|
* Userspace API for hardware time stamping of network packets
|
|
*
|
|
* Copyright (C) 2008,2009 Intel Corporation
|
|
* Author: Patrick Ohly <patrick.ohly@intel.com>
|
|
*
|
|
*/
|
|
|
|
#ifndef _NET_TIMESTAMPING_H
|
|
#define _NET_TIMESTAMPING_H
|
|
|
|
#include <linux/socket.h> /* for SO_TIMESTAMPING */
|
|
|
|
/* SO_TIMESTAMPING gets an integer bit field comprised of these values */
|
|
enum {
|
|
SOF_TIMESTAMPING_TX_HARDWARE = (1<<0),
|
|
SOF_TIMESTAMPING_TX_SOFTWARE = (1<<1),
|
|
SOF_TIMESTAMPING_RX_HARDWARE = (1<<2),
|
|
SOF_TIMESTAMPING_RX_SOFTWARE = (1<<3),
|
|
SOF_TIMESTAMPING_SOFTWARE = (1<<4),
|
|
SOF_TIMESTAMPING_SYS_HARDWARE = (1<<5),
|
|
SOF_TIMESTAMPING_RAW_HARDWARE = (1<<6),
|
|
SOF_TIMESTAMPING_MASK =
|
|
(SOF_TIMESTAMPING_RAW_HARDWARE - 1) |
|
|
SOF_TIMESTAMPING_RAW_HARDWARE
|
|
};
|
|
|
|
/**
|
|
* struct hwtstamp_config - %SIOCSHWTSTAMP parameter
|
|
*
|
|
* @flags: no flags defined right now, must be zero
|
|
* @tx_type: one of HWTSTAMP_TX_*
|
|
* @rx_type: one of one of HWTSTAMP_FILTER_*
|
|
*
|
|
* %SIOCSHWTSTAMP expects a &struct ifreq with a ifr_data pointer to
|
|
* this structure. dev_ifsioc() in the kernel takes care of the
|
|
* translation between 32 bit userspace and 64 bit kernel. The
|
|
* structure is intentionally chosen so that it has the same layout on
|
|
* 32 and 64 bit systems, don't break this!
|
|
*/
|
|
struct hwtstamp_config {
|
|
int flags;
|
|
int tx_type;
|
|
int rx_filter;
|
|
};
|
|
|
|
/* possible values for hwtstamp_config->tx_type */
|
|
enum hwtstamp_tx_types {
|
|
/*
|
|
* No outgoing packet will need hardware time stamping;
|
|
* should a packet arrive which asks for it, no hardware
|
|
* time stamping will be done.
|
|
*/
|
|
HWTSTAMP_TX_OFF,
|
|
|
|
/*
|
|
* Enables hardware time stamping for outgoing packets;
|
|
* the sender of the packet decides which are to be
|
|
* time stamped by setting %SOF_TIMESTAMPING_TX_SOFTWARE
|
|
* before sending the packet.
|
|
*/
|
|
HWTSTAMP_TX_ON,
|
|
|
|
/*
|
|
* Enables time stamping for outgoing packets just as
|
|
* HWTSTAMP_TX_ON does, but also enables time stamp insertion
|
|
* directly into Sync packets. In this case, transmitted Sync
|
|
* packets will not received a time stamp via the socket error
|
|
* queue.
|
|
*/
|
|
HWTSTAMP_TX_ONESTEP_SYNC,
|
|
};
|
|
|
|
/* possible values for hwtstamp_config->rx_filter */
|
|
enum hwtstamp_rx_filters {
|
|
/* time stamp no incoming packet at all */
|
|
HWTSTAMP_FILTER_NONE,
|
|
|
|
/* time stamp any incoming packet */
|
|
HWTSTAMP_FILTER_ALL,
|
|
|
|
/* return value: time stamp all packets requested plus some others */
|
|
HWTSTAMP_FILTER_SOME,
|
|
|
|
/* PTP v1, UDP, any kind of event packet */
|
|
HWTSTAMP_FILTER_PTP_V1_L4_EVENT,
|
|
/* PTP v1, UDP, Sync packet */
|
|
HWTSTAMP_FILTER_PTP_V1_L4_SYNC,
|
|
/* PTP v1, UDP, Delay_req packet */
|
|
HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ,
|
|
/* PTP v2, UDP, any kind of event packet */
|
|
HWTSTAMP_FILTER_PTP_V2_L4_EVENT,
|
|
/* PTP v2, UDP, Sync packet */
|
|
HWTSTAMP_FILTER_PTP_V2_L4_SYNC,
|
|
/* PTP v2, UDP, Delay_req packet */
|
|
HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ,
|
|
|
|
/* 802.AS1, Ethernet, any kind of event packet */
|
|
HWTSTAMP_FILTER_PTP_V2_L2_EVENT,
|
|
/* 802.AS1, Ethernet, Sync packet */
|
|
HWTSTAMP_FILTER_PTP_V2_L2_SYNC,
|
|
/* 802.AS1, Ethernet, Delay_req packet */
|
|
HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ,
|
|
|
|
/* PTP v2/802.AS1, any layer, any kind of event packet */
|
|
HWTSTAMP_FILTER_PTP_V2_EVENT,
|
|
/* PTP v2/802.AS1, any layer, Sync packet */
|
|
HWTSTAMP_FILTER_PTP_V2_SYNC,
|
|
/* PTP v2/802.AS1, any layer, Delay_req packet */
|
|
HWTSTAMP_FILTER_PTP_V2_DELAY_REQ,
|
|
};
|
|
|
|
#endif /* _NET_TIMESTAMPING_H */
|